SOLUTION: a newspaper carrier has $6.30 in change. he has three times more quarters than dimes but four times as many nickles as quarters. how many coins of each type does he have?

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Question 947560: a newspaper carrier has $6.30 in change. he has three times more quarters than dimes but four times as many nickles as quarters. how many coins of each type does he have?
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
a newspaper carrier has $6.30 in change. he has three times more quarters than dimes but four times as many nickles as quarters. how many coins of each type does he have?
Equations::
5n + 10d + 25q = 630 cents
q = 3d
n = 4q
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Substitute for n and d and solve for "q"::
5(4q) + 10(q/3) + 25q = 630
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Multiply thru by 3 to get:
60q + 10q + 75q = 1890
145q = 1890
q = 13.034..
Note: q must be a whole number.
Please check the accuracy of your post.
Cheers,
Stan H.
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